Tone-arm support.



.sfm.v TONE ARM SUPPORT.

APPLICATION FILED SEPT- 5, 19M,

HERMAN SEG-AL, F NEW YORK, N. Y.

TONE-Ama sUrron'r.

I Specication of Letters Patent.

Patented May 29, 19177. l

' Application filed September 5, 1916. Serial No. 118,390. I

To all whom t may concern.'

Be it known that I, HERMAN SEGAL, a citizen ofthe United States, residing at New York, in the county of Bronx and State of New York, have invented certain new and useful Improvements in Tone-Arm Supports, of'which the following is a full, clear, and exact specification.v

The object of m invention is to provide '10 an improved yantiiction. mounting for the',

tone-arm of a talking machine adapted to be produced at 'alow cost, of but few partsl and of simple and practical construction. Accordingly my invention consists in the l5 arrangement and combination of parts and elements as hereinafter described and as illustrated in the accompanying drawing in Figure 1 is a view, partly in elewiation and partly' in section, of' a ltone-arm mounting embodying my invention.

Fig. 2 is a fragmentary view in elevation of the mounting, and 4 Fig. 3 is a partial horizontal sectionall view through the upper ball race;

In the drawing the reference numeral 5 denotes the talking .machine cabinet from the tone-arm and which rests upon the s oul- 4% der 15 of theA hollow bracket or neck 16 se-A cured by any suitable means (not showng( to the cabinet 1 -for whichl purpose the nec 16 is provided with a flange 17.'

The neck or hollow bracket16 is further provided with two -outer ball races'lS and 19, while the "sleeve' 13 is provided with two corresponding inner ball races 2 1 and 22 and a slot 23. y Balls 24, 24 run in the races 18-21 and 19-22. c

In order to place the balls inthe races,

the neck 16 is-provided with the openings v25 and 26 extending -from the outsl e races.` This opening 25 communicates with thlnpper ball race -18f21, and theopening v illustrate p ited thereto but may be'varied without -de- 105" .parting `from thev spirit ofthe invention or 4 the scope of the appended claim. 1

through the wall of the neck into the ball 26 leads into the lower ball race 19-22. The openings are covered b a plate 27 which fits into a cut out portion 28 of the wall of the neck 16, the holes 25 .and 26 being cut through said thinned portion, so

that the plate is practically flush with the, outer sur ace of the neck or bracket 16. l

30 is a screw for securing the plate 27 in position.l The shank 3 1'of the screw projects into the said slot 23 to limit the move- 65 ment horizontally of the tone-arm as will be understood.. Y

In assembling the tone-arm, the sleeve 13 is inserted into the bracket 16. lThereafter the balls are dropped through the openings 25 and 26 into the respective ball races. A slight turning of the bracket or tone-arm will cause the vballs to run around the races andmake room for ythe succeeding balls.

After the last ball-has been put in place,

the plate l27 is adjusted over the openings and the screw 30 screwed home and the parts .are assembled. It will alsobe understood:

that'the parts are so'proportioned 'that the plate does not bind upon the balls but that the-latter arev free tol move in the races.

i The parts are further so arranged that the weight of the tone-arm rests upon the balls and not upon the shoulder 15 of the bracket 16, thou l1 a close t is made at 85 the latterpoint or'the sake of appearance and also to prevent dust from settling. under .theflange 14. In'addition to acting as an anti-friction means for the tone-arm and to support the weight thereof, it will be 90 noted that the balls 18 serve as a locking means which prevents the removal of the tone-arm from the bracket 16.

VThe mounting as here described and illustrated 4is very simplel in construction and 95 very eiiicient in operation. The mounting is-anti-friction because ofthe balls and the latter also serve to take up any small inac- -curacies inthe diameters of the bracket 16 and the tone-arm sleeve 13 and support the .100 latter in two different horizontal planes'to prevent vertical oscillations, as is obvious. Althoughonly a lsingle form: has been herein, the invention is not lim- 'I'cla1m: f y `The combination with the tone-arm and Y thecabinet of a talking machine, a hollow .110

sleeve secured to said tone-arm and having afhorizontal slot, a hollow bracket secured to said cabinet and adapted to receive said v hollow sleeve, ball bearings between the lat- 5 ter and the said bracket, a plate Jfor preventing the balls in said ball bearings from leaving the same and a screw ,for securing the said plate to the said hollow bracket,v saicl screw extending into the said slot to limit the movement of the said tone-arm.

I ln testimony whereof, I ax my signature. HERMAN SEGAL. 

